Observations of the 86 GHz SiO maser sources in the Central Parsec of the Galactic Centre

A. Borkar; A. Eckart; C. Straubmeier; N. B. Sabha; L. O. Sjouwerman; V. Karas; D. Kunneriath; L. Moser; S. Britzen; M. S. Valencia; A. Donea; A. Zensus

doi:10.22323/1.362.0033

Observations of the 86 GHz SiO maser sources in the Central Parsec of the Galactic Centre

A. Borkar, A. Eckart, C. Straubmeier, N. B. Sabha, L. O. Sjouwerman, V. Karas, D. Kunneriath, L. Moser, S. Britzen, M. S. Valencia, A. Donea, A. Zensus

School of Mathematics

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research

Abstract

We present results of 3 mm observations of SiO maser sources in the Galactic Centre (GC) from observations with the Australia Telescope Compact Array between 2010 − 2014, along the transitions of the SiO molecule at v = 1, J = 2 − 1 at 86.243 GHz and v = 2, J = 2 − 1 at 85.640 GHz. We also present the results of the 3 mm observations with Atacama Large Millimeter/Submillimeter Array (ALMA). We detected 5 maser sources from the ATCA data, IRS 7, IRS 9, IRS 10EE, IRS 12N, and IRS 28; and 20 sources from the ALMA data including 4 new sources. These sources are predominantly late-type giants or emission line stars with strong circumstellar maser emission. We analyse these sources and calculate their proper motions. We also study the variability of the maser emission. IRS 7, IRS 12N and IRS 28 exhibit long period variability of the order of 1 − 2 years, while other sources show steady increase or decrease in flux density and irregular variability over observation timescales. This behaviour is consistent with the previous observations.

Original language	English
Title of host publication	Proceedings of Science
Subtitle of host publication	Volume 3622019 Article number 03313th Frascati Workshops on "Multifrequency Behaviour of High Energy Cosmic Sources", MULTIF 2019Palermo3 June 2019through 8 June 2019
Editors	Franco Giovannelli, Lola Sabau-Graziati
Place of Publication	Italy
Publisher	Sissa Medialab, SRL
Number of pages	22
Volume	362
DOIs	https://doi.org/10.22323/1.362.0033
Publication status	Published - 2019
Event	Frascati Workshops on Multifrequency Behaviour of High Energy Cosmic Sources 2019 - Palermo, Italy Duration: 3 Jun 2019 → 8 Jun 2019 Conference number: 13th http://workshop2019.iaps.inaf.it/

Publication series

Name	Proceedings of Science
Publisher	Sissa Medialab
Volume	362
ISSN (Electronic)	1824-8039

Workshop

Workshop	Frascati Workshops on Multifrequency Behaviour of High Energy Cosmic Sources 2019
Abbreviated title	MULTIF2019
Country/Territory	Italy
City	Palermo
Period	3/06/19 → 8/06/19
Other	This is the thirteenth edition of the series of Frascati Workshops on "Multifrequency Behaviour of High Energy Cosmic Sources" which is undoubtedly a largely accepted biennial meeting in which an updated experimental and theoretical panorama will be depicted. This edition comes at the 35th anniversary of the first historical "multifrequency" workshop about "Multifrequency Behaviour of Galactic Accreting Sources", held in Vulcano in September 1984. This surely renders the Frascati Workshop Series the oldest among the many devoted to "Multifrequency Studies of Cosmic Sources". The study of the physics governing the cosmic sources will be the main goal of the workshop. A session devoted to the ongoing and next generation ground- and space-based experiments will give the actual prospects for the first decades of this millennium.
Internet address	http://workshop2019.iaps.inaf.it/

Cite this

Borkar, A., Eckart, A., Straubmeier, C., Sabha, N. B., Sjouwerman, L. O., Karas, V., Kunneriath, D., Moser, L., Britzen, S., Valencia, M. S., Donea, A., & Zensus, A. (2019). Observations of the 86 GHz SiO maser sources in the Central Parsec of the Galactic Centre. In F. Giovannelli, & L. Sabau-Graziati (Eds.), Proceedings of Science: Volume 3622019 Article number 03313th Frascati Workshops on "Multifrequency Behaviour of High Energy Cosmic Sources", MULTIF 2019Palermo3 June 2019through 8 June 2019 (Vol. 362). Article 033 (Proceedings of Science; Vol. 362). Sissa Medialab, SRL. https://doi.org/10.22323/1.362.0033

Borkar, A. ; Eckart, A. ; Straubmeier, C. et al. / Observations of the 86 GHz SiO maser sources in the Central Parsec of the Galactic Centre. Proceedings of Science: Volume 3622019 Article number 03313th Frascati Workshops on "Multifrequency Behaviour of High Energy Cosmic Sources", MULTIF 2019Palermo3 June 2019through 8 June 2019. editor / Franco Giovannelli ; Lola Sabau-Graziati. Vol. 362 Italy : Sissa Medialab, SRL, 2019. (Proceedings of Science).

@inproceedings{aa7028182165483c82e87a8fe48fa4e7,

title = "Observations of the 86 GHz SiO maser sources in the Central Parsec of the Galactic Centre",

abstract = "We present results of 3 mm observations of SiO maser sources in the Galactic Centre (GC) from observations with the Australia Telescope Compact Array between 2010 − 2014, along the transitions of the SiO molecule at v = 1, J = 2 − 1 at 86.243 GHz and v = 2, J = 2 − 1 at 85.640 GHz. We also present the results of the 3 mm observations with Atacama Large Millimeter/Submillimeter Array (ALMA). We detected 5 maser sources from the ATCA data, IRS 7, IRS 9, IRS 10EE, IRS 12N, and IRS 28; and 20 sources from the ALMA data including 4 new sources. These sources are predominantly late-type giants or emission line stars with strong circumstellar maser emission. We analyse these sources and calculate their proper motions. We also study the variability of the maser emission. IRS 7, IRS 12N and IRS 28 exhibit long period variability of the order of 1 − 2 years, while other sources show steady increase or decrease in flux density and irregular variability over observation timescales. This behaviour is consistent with the previous observations.",

author = "A. Borkar and A. Eckart and C. Straubmeier and Sabha, {N. B.} and Sjouwerman, {L. O.} and V. Karas and D. Kunneriath and L. Moser and S. Britzen and Valencia, {M. S.} and A. Donea and A. Zensus",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons.; Frascati Workshops on Multifrequency Behaviour of High Energy Cosmic Sources 2019, MULTIF2019 ; Conference date: 03-06-2019 Through 08-06-2019",

year = "2019",

doi = "10.22323/1.362.0033",

language = "English",

volume = "362",

series = "Proceedings of Science",

publisher = "Sissa Medialab, SRL",

editor = "Franco Giovannelli and Lola Sabau-Graziati",

booktitle = "Proceedings of Science",

url = "http://workshop2019.iaps.inaf.it/",

}

Borkar, A, Eckart, A, Straubmeier, C, Sabha, NB, Sjouwerman, LO, Karas, V, Kunneriath, D, Moser, L, Britzen, S, Valencia, MS, Donea, A & Zensus, A 2019, Observations of the 86 GHz SiO maser sources in the Central Parsec of the Galactic Centre. in F Giovannelli & L Sabau-Graziati (eds), Proceedings of Science: Volume 3622019 Article number 03313th Frascati Workshops on "Multifrequency Behaviour of High Energy Cosmic Sources", MULTIF 2019Palermo3 June 2019through 8 June 2019. vol. 362, 033, Proceedings of Science, vol. 362, Sissa Medialab, SRL, Italy, Frascati Workshops on Multifrequency Behaviour of High Energy Cosmic Sources 2019, Palermo, Italy, 3/06/19. https://doi.org/10.22323/1.362.0033

Observations of the 86 GHz SiO maser sources in the Central Parsec of the Galactic Centre. / Borkar, A.; Eckart, A.; Straubmeier, C. et al.
Proceedings of Science: Volume 3622019 Article number 03313th Frascati Workshops on "Multifrequency Behaviour of High Energy Cosmic Sources", MULTIF 2019Palermo3 June 2019through 8 June 2019. ed. / Franco Giovannelli; Lola Sabau-Graziati. Vol. 362 Italy: Sissa Medialab, SRL, 2019. 033 (Proceedings of Science; Vol. 362).

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research

TY - GEN

T1 - Observations of the 86 GHz SiO maser sources in the Central Parsec of the Galactic Centre

AU - Borkar, A.

AU - Eckart, A.

AU - Straubmeier, C.

AU - Sabha, N. B.

AU - Sjouwerman, L. O.

AU - Karas, V.

AU - Kunneriath, D.

AU - Moser, L.

AU - Britzen, S.

AU - Valencia, M. S.

AU - Donea, A.

AU - Zensus, A.

N1 - Conference code: 13th

PY - 2019

Y1 - 2019

N2 - We present results of 3 mm observations of SiO maser sources in the Galactic Centre (GC) from observations with the Australia Telescope Compact Array between 2010 − 2014, along the transitions of the SiO molecule at v = 1, J = 2 − 1 at 86.243 GHz and v = 2, J = 2 − 1 at 85.640 GHz. We also present the results of the 3 mm observations with Atacama Large Millimeter/Submillimeter Array (ALMA). We detected 5 maser sources from the ATCA data, IRS 7, IRS 9, IRS 10EE, IRS 12N, and IRS 28; and 20 sources from the ALMA data including 4 new sources. These sources are predominantly late-type giants or emission line stars with strong circumstellar maser emission. We analyse these sources and calculate their proper motions. We also study the variability of the maser emission. IRS 7, IRS 12N and IRS 28 exhibit long period variability of the order of 1 − 2 years, while other sources show steady increase or decrease in flux density and irregular variability over observation timescales. This behaviour is consistent with the previous observations.

AB - We present results of 3 mm observations of SiO maser sources in the Galactic Centre (GC) from observations with the Australia Telescope Compact Array between 2010 − 2014, along the transitions of the SiO molecule at v = 1, J = 2 − 1 at 86.243 GHz and v = 2, J = 2 − 1 at 85.640 GHz. We also present the results of the 3 mm observations with Atacama Large Millimeter/Submillimeter Array (ALMA). We detected 5 maser sources from the ATCA data, IRS 7, IRS 9, IRS 10EE, IRS 12N, and IRS 28; and 20 sources from the ALMA data including 4 new sources. These sources are predominantly late-type giants or emission line stars with strong circumstellar maser emission. We analyse these sources and calculate their proper motions. We also study the variability of the maser emission. IRS 7, IRS 12N and IRS 28 exhibit long period variability of the order of 1 − 2 years, while other sources show steady increase or decrease in flux density and irregular variability over observation timescales. This behaviour is consistent with the previous observations.

UR - http://www.scopus.com/inward/record.url?scp=85101164355&partnerID=8YFLogxK

U2 - 10.22323/1.362.0033

DO - 10.22323/1.362.0033

M3 - Conference Paper

AN - SCOPUS:85101164355

VL - 362

T3 - Proceedings of Science

BT - Proceedings of Science

A2 - Giovannelli, Franco

A2 - Sabau-Graziati, Lola

PB - Sissa Medialab, SRL

CY - Italy

T2 - Frascati Workshops on Multifrequency Behaviour of High Energy Cosmic Sources 2019

Y2 - 3 June 2019 through 8 June 2019

ER -

Borkar A, Eckart A, Straubmeier C, Sabha NB, Sjouwerman LO, Karas V et al. Observations of the 86 GHz SiO maser sources in the Central Parsec of the Galactic Centre. In Giovannelli F, Sabau-Graziati L, editors, Proceedings of Science: Volume 3622019 Article number 03313th Frascati Workshops on "Multifrequency Behaviour of High Energy Cosmic Sources", MULTIF 2019Palermo3 June 2019through 8 June 2019. Vol. 362. Italy: Sissa Medialab, SRL. 2019. 033. (Proceedings of Science). doi: 10.22323/1.362.0033

Observations of the 86 GHz SiO maser sources in the Central Parsec of the Galactic Centre

Abstract

Publication series

Workshop

Other files and links

Cite this